Description

Key Features

Load-Rated Strength

This Simpson Strong-Tie L90Z Reinforcing L Angle is built as a load-rated connector, not a site-made bracket. That matters when you need published values for real structural reinforcement work.

Staggered Nail Pattern

The hole layout is designed to reduce the chance of splitting lumber during installation. You get a cleaner connection and a better shot at hitting full published performance.

ZMAX Corrosion Resistance

The ZMAX finish is made for tougher environments than standard galvanized parts. It is a practical choice when you are working with treated lumber and matching approved galvanized fasteners.

Overview

The Simpson Strong-Tie L90Z Reinforcing L Angle is a 9 inch, 16 gauge steel framing connector used to reinforce wood-to-wood connections. This is a reinforcing L angle designed for structural fastening and general utility reinforcement in framing applications. Model Number: L90Z. If you need a pre-engineered angle with defined fastener locations instead of fabricating a clip angle in the field, this is the kind of part that keeps the job straightforward and predictable.

What separates the L90Z from a generic angle bracket is that it is load rated and built around known fastener locations. Simpson Strong-Tie calls out that the tabulated load values account for connection eccentricities, which is the kind of detail that matters when the connector is doing real work in a framing assembly. The 9 inch length gives you more reach than shorter utility angles, which helps when you need a longer connection path across framing members.

The body is made from 54 mil, 16 gauge steel with a ZMAX coating. In practical terms, the steel thickness gives the connector the rigidity expected for structural reinforcement, while the ZMAX finish improves corrosion resistance compared to standard G90 galvanized versions. That makes the Simpson Strong-Tie L90Z Reinforcing L Angle a better fit for projects where moisture exposure or treated lumber is part of the conversation.

Another jobsite-friendly detail is the staggered nail pattern. That is not just a manufacturing choice. It helps reduce the possibility of splitting the wood during installation, especially when fastening near edges or working with framing members that do not give you much room for error. The hole layout is also well defined, so installers are not guessing where fasteners should go to match published performance.

This connector is load rated for wood and cold-formed steel applications, but its listed primary application here is fastening wood to wood. For the L90Z, supplementary product data calls for (10) 0.148 inch x 1-1/2 inch nails, and installation guidance notes that all specified fasteners must be used. Simpson also notes that the wider leg should be nailed into the joist to ensure table loads and allow correct nailing. That is the kind of small install detail that can make the difference between a connector that just looks installed and one that performs the way it was designed to.

Who is this for? Carpenters, framers, deck builders, remodelers, and general contractors who want a known connector for reinforcing corners and intersections in wood framing. It also makes sense for serious DIY users working on sheds, decks, additions, or repair work where a proper structural connector is the right answer. If you are buying for treated lumber work, the ZMAX version is the one more people should be looking at first.

Reinforce Framing Without Guesswork

This connector is built for real framing reinforcement, not improvised metal work on site. When you need a reliable way to tie wood members together, the defined shape and fastener locations help keep the install consistent.

• Primary application is fastening wood to wood
• Load rated design with published load values

Built to Handle Treated Lumber Work

The ZMAX finish is the practical reason to choose this version over a standard galvanized angle when corrosion resistance matters. It is also listed as suitable for treated lumber when paired with the correct fasteners.

• ZMAX finish for enhanced corrosion resistance
• Compatible with hot-dip galvanized fasteners

Designed for Cleaner, Smarter Fastening

Good connectors make installation easier to get right. The staggered hole pattern helps reduce splitting, and Simpson’s guidance on leg orientation helps the connector carry load the way it was intended.

• Staggered nail pattern reduces the possibility of splitting
• Use all specified fasteners to achieve published values

What’s in the Box

• (1) Simpson Strong-Tie L90Z Reinforcing L Angle

Key Specifications

Length	9 in.
Material	Steel
Thickness	54 mil
Gauge	16 ga.
Finish	ZMAX
Application	Fastening Wood-to-Wood
Required Fasteners	(10) 0.148 in. x 1-1/2 in. nails
For Treated Lumber	Yes

Compatibility

Base Materials

Load rated for wood and cold-formed steel applications, with the listed primary application of fastening wood to wood.

Fasteners

Supplementary product data lists compatibility with hot-dip galvanized fasteners and specifies (10) 0.148 in. x 1-1/2 in. nails.

Treated Lumber

Listed as suitable for treated lumber when the correct fasteners are used.

Built For

Carpentry Construction General Contracting Remodeling Wood Framing Deck Building Structural Reinforcement DIY / Hobbyist

Pro Tip

On this L90Z, put the wider leg into the joist and use every specified fastener location. That is how you stay aligned with Simpson’s published load tables instead of leaving capacity on the table.

Tool Nut’s Take

Tool Nut’s Take

Simpson Strong-Tie L90Z Reinforcing L Angle Gets the Job Done Right

If you need a longer structural angle with real load data and better corrosion resistance, this is the one to buy instead of bending up your own bracket and hoping for the best.

• Who it’s for: Framers, deck builders, remodelers, and anyone reinforcing wood connections where a proper structural connector makes more sense than a generic hardware-store angle.
• Why it stands out: You get a 9 inch load-rated angle, 16 gauge steel, a staggered nail pattern to help reduce splitting, and a ZMAX finish that makes more sense for treated lumber work.
• Worth knowing: The connector only performs as intended when you use the specified fasteners in the specified locations, so do not treat it like a universal bracket.

Common Questions

• What is the Simpson Strong-Tie L90Z Reinforcing L Angle used for? It is used for reinforcing wood-to-wood framing connections and other general utility structural fastening applications.
• What size is the L90Z? The L90Z has a listed length of 9 inches.
• Is this connector suitable for treated lumber? Supplementary product data lists it as suitable for treated lumber, and it is commonly paired with compatible galvanized fasteners.
• What fasteners are specified? Supplementary product data lists (10) 0.148 inch x 1-1/2 inch nails, and Simpson notes that all specified fasteners should be used.